Error

[vecerapl]

Traceback (most recent call last):
File "test.py", line 4, in
tsl = tsl2591.Tsl2591() # initialize
File "/python-tsl2591/tsl2591/read_tsl.py", line 73, in init
self.set_timing(self.integration_time)
File "/python-tsl2591/tsl2591/read_tsl.py", line 78, in set_timing
self.enable()
File "/python-tsl2591/tsl2591/read_tsl.py", line 145, in enable
TSL2591_ENABLE_POWERON | TSL2591_ENABLE_AEN | TSL2591_ENABLE_AIEN
File "/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv7l.egg/smbus/util.py", line 59, in validator
return fn(_args, *_kwdefaults)
File "/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv7l.egg/smbus/smbus.py", line 145, in write_byte_data
raise IOError(ffi.errno)
IOError: 5

[maxlklaxl]

context please

[vecerapl]

I installed the application TSL2591, I had to install:
sudo apt-get install python-dev
sudo apt-get install libffi-dev

Then I made the installation of GIT:
git clone https://github.com/maxlklaxl/python-tsl2591.git
cd python-tsl2591
sudo python setup.py install

Here is an example of the installation: http://www.napajedlaci.cz/python.txt

I created a test.py:
sudo touch test.py

Put your code and save the file.
import tsl2591

tsl = tsl2591.Tsl2591() # initialize
full, ir = tsl.get_full_luminosity() # read raw values (full spectrum and ir spectrum)
lux = tsl.calculate_lux(full, ir) # convert raw values to lux
print lux, full, ir

And this is cmd: "python test.py":
Traceback (most recent call last):
File "test.py", line 3, in
tsl = tsl2591.Tsl2591() # initialize
File "/home/pi/python-tsl2591/tsl2591/read_tsl.py", line 73, in init
self.set_timing(self.integration_time)
File "/home/pi/python-tsl2591/tsl2591/read_tsl.py", line 78, in set_timing
self.enable()
File "/home/pi/python-tsl2591/tsl2591/read_tsl.py", line 145, in enable
TSL2591_ENABLE_POWERON | TSL2591_ENABLE_AEN | TSL2591_ENABLE_AIEN
File "/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv7l.egg/smbus/util.py", line 59, in validator
return fn(_args, *_kwdefaults)
File "/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv7l.egg/smbus/smbus.py", line 145, in write_byte_data
raise IOError(ffi.errno)
IOError: 5

[vecerapl]

I installed od Raspbian Jessie (kernel 4.1) and also later on Wheezy (kernel 3.18).

[maxlklaxl]

It looks to me that there is no connection to the sensor

do you see the TSL here

sudo i2cdetect -y 1

or

sudo i2cdetect -y 0

Does your user has the right permissions? Can you try to run the Quickstart lines from the console instead of a script?

[vecerapl]

How to run quickstart? To communicate with Raspberry PI 2 only use Putty.
My involvement: https://ctrlv.cz/shots/2015/12/20/4IUk.png AND https://ctrlv.cz/shots/2015/12/20/efes.png

sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- 29 -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

i2cdump -y 1 0x29 b

 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef

00: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
10: XX XX XX XX XX XX XX XX XX XX XX XX 1c 1d 1e 1f XXXXXXXXXXXX????
20: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f !"#$%&'()*+,-./
30: 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 0123456789:;<=>?
40: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @abcdefghijklmno
50: 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f PQRSTUVWXYZ[]^_
60: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f `abcdefghijklmno
70: 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f pqrstuvwxyz{|}~?
80: 7f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ?...............
90: 00 01 50 00 00 00 00 00 1a e0 c0 41 00 00 00 00 .?P.....???A....
a0: 7f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ?...............
b0: 00 01 50 00 00 00 00 00 1a e0 c0 41 00 00 00 00 .?P.....???A....
c0: 00 00 00 00 00 7f 00 00 00 00 00 00 00 00 00 44 .....?.........D
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

[vecerapl]

Error: Read failed
i2cget -y 1 0x29 0xb4
i2cget -y 1 0x29 0xb6

[maxlklaxl]

so I guess you have a general issue with the i2c connection.

did you follow these instructions
https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c

[maxlklaxl]

Oh, and I see you have a raspberry Pi 2, I only tested on the first generation. probably there changed something with the i2c, haven't worked with it jet

[alva-seal]

I have an raspberry Pi 2 and for me this library works and I can reach the TSL2591 from the comandline.
Just as an Information regarding the Pi2.

[mjbcncs]

Hey did you solve the problem? I have the exact same error message here, except the IOError: 110 in the last line. Please help

[maxlklaxl]

never had this problem, can you reach it from commandline?

On 31 October 2016 at 03:19, mjbcncs notifications@github.com wrote:

Hey did you solve the problem? I have the exact same error message here,
except the IOError: 110 in the last line. Please help

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